/*
 * Copyright 2019 WeBank
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.webank.wedatasphere.linkis.filesystem.reader

import java.util

import com.webank.wedatasphere.linkis.common.io.{FsPath, FsReader, MetaData, Record}
import com.webank.wedatasphere.linkis.storage.fs.FileSystem

/**
  * Created by johnnwang on 2019/4/16.
  */
trait FileReader {
  protected var fsReader: FsReader[MetaData, Record]

  protected var kind: String

  def init(fileSystem: FileSystem, fsPath: FsPath, params: util.HashMap[String, String]): Unit

  def getHead: util.HashMap[String, Object]

  /**
    * Expansion of this piece needs to be optimized(扩容这块需要优化下)
    *
    * @return
    */
  def getBody: util.ArrayList[util.ArrayList[String]]

}
